In the older days STAAD.Pro was able to consider joint Weights only to define seismic weight. The option still remains there. Now, you have many others options like- Member Weight, Element weight, Floor Weights along with reference loads. You can simply use them. The most sophisticated method is Reference Mass load case.
If you are interested to calculate joint weights, you need to assign pinned support to all the nodes except the supported nodes. In this model, you need to apply DL and required amount of (some % ) LL for which you want to calculate seismic weight. The support reaction in FY is the joint weight of the model
If you are interested to calculate joint weights, you need to assign pinned support to all the nodes except the supported nodes. In this model, you need to apply DL and required amount of (some % ) LL for which you want to calculate seismic weight. The support reaction in FY is the joint weight of the model
